diff --git a/gitNotes_from_Liao.md b/gitNotes_from_Liao.md
index dcb3450..af2fa59 100644
--- a/gitNotes_from_Liao.md
+++ b/gitNotes_from_Liao.md
@@ -268,3 +268,9 @@ $ git tag -d <tagname>
 ```bash
 $ git push origin :refs/tags/<tagname>
 ```
+#### 删除一个远程分支
+```bash
+$ git checkout master
+$ git branch -d dev
+$ git push origin :dev
+```
\ No newline at end of file
diff --git a/gitNotes_from_Liao.pdf b/gitNotes_from_Liao.pdf
index d028fcf..710f029 100644
Binary files a/gitNotes_from_Liao.pdf and b/gitNotes_from_Liao.pdf differ